Granted Patent
Utility
US 6,497,533 · App. 10/051,145
Drainage system with membrane cover and method for covering wastewater reservoir
Inventor:
Claude J. DeGarie
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Jan 22, 2002
Inventor
Claude J. DeGarie
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.